I have a 42 in lg rear projection tv model no 56DC1D-AB. The tv was working fine last night but when turned on this afternoon cannot get any digital channel, but can get analog.I have a 42 in lg rear projection tv model no 56DC1D-AB. The tv was working fine last night but when turned on this afternoon cannot get any digital channel, but can get analog.

Try and reprogram all channels in the tv. Goto menu and use the auto program function to do this and see what happens. If this does not fix it then you will need to send to a repiar shop. The main pcb is most likly bad.

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if you have the right video inputs and your cable box is working then your tv is shot .sometimes your cablebox is outputing excess poxer that can affect your tv .also get your cable tv company involve.

Most likely what happened is one of the capacitors went bad. When a capacitors goes bad it produces a popping sound. This could be an easy and cheap fix if you find the bad capacitor or capacitors. The bad capacitor will have a bulging top most likely on the power board but could be anywhere.

Hi , I recently had the same problem which I was determined to fix . So I did a few weeks of research to find that it was the Y SUS board which burns out. I'm sure you realized that the TV gets hot. Personally I think this is why. circuit boards don't like heat and I've learned that the cooling fans are a joke. I replaced the board and got my picture back. I proved the fan theory because after the screen started to act up. I placed a cooling fan near the vent holes on top and the problem cleared right up,It also helps if you lower the brightness which helps out on the heat situation.I will soon be adding a fan with a temp. sensor. This shoud help if your screen has lines when you initially turn the cool TV on.then I have Some other costless solutions. Hope this helped these are great TV's and like our cars we maintain them not throw them away..................................Mr Wiseman

Our LG 50" plasma tv screen went black after a popping noise but still had sound, after great diliberations decided to take the back off and have a peek!
We unplugged the tv and tested the fuses (there were three we could see) one had blown, the one on the left as you look at the back of the tv it also has one above it. We wrote the code/seriel number down and took the fuse to the electrical wholesalers Maplin and bought a pack of 10 fuses for £1.29 replaced the fuse in the tv and everything now fine!!!!!!
Hope this might be of use to anyone whose lost the picture after a loud popping/snacking noise but still has sound.